Journal of Central South University of Technology

, Volume 12, Issue 6, pp 635–640 | Cite as

Microscopic phase-field simulation for nucleation incubation time of Ni75AlxV25−x alloy

  • Li Yong-sheng Email author
  • Chen Zheng 
  • Lu Yan-li 
  • Wang Yong-xin 
  • Zhang Jian-jun 


With the microscopic phase-field dynamic model, the effects of temperature and concentration on the nucleation incubation time of Ni75AlxV25−x alloy were studied and the relation between the incubation time and precipitation mechanism was investigated by using the atomic occupation probability picture and average order parameter curve. The simulation results demonstrate that there exists the incubation time for different precipitation mechanisms, such as non-classical nucleation, the mixed style of non-classical nucleation and spinodal decomposition, and spinodal ordering; and the incubation time shortens in turn for the three kinds of mechanisms. With the increase of Al content of Ni75AlxV25−x alloy, the incubation time of L12 phases shortens continuously and that of D022 phases is prolonged. The effects of temperature on the incubation time of L12 and D022 phases are accordant, i.e. the incubation time is greatly prolonged with the temperature rising.

Key words

microscopic phase-field nucleation incubation time order parameter simulation 

CLC number



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  1. [1]
    Robson J D. Modelling the overlap of nucleation, growth and coarsening during precipitation[J]. Acta Mater, 2004, 52: 4669–4676.CrossRefGoogle Scholar
  2. [2]
    Wagner R, Kampmann R. Phase Transformations in Materials[M]. Weinheim: VCH Verlagsges, 1991.Google Scholar
  3. [3]
    Cherne F J, Baskes M I, Schwarz R B, et al. Nonclassical nucleation in supercooled nickel[J]. Modelling Simul Mater Sci Eng, 2004, 12: 1063–1068.CrossRefGoogle Scholar
  4. [4]
    Kessler M, Dieterich W, Majhofer A. Ordering kinetics in an fcc A3B binary alloy model: Monte Carlo studies[J]. Physical Review B, 2003, 67: 134201.CrossRefGoogle Scholar
  5. [5]
    Soisson F, Martin G. Monte-Carlo simulations of the decomposition of metastable solid solutions: transient and steady-state nucleation kinetics [J]. Physical Review B, 2000, 62(1): 203–214.CrossRefGoogle Scholar
  6. [6]
    Chen L Q, Simmons J A. Microscopic master equation approach to diffusional transformations in inhomogeneous systems-single site approximation and direct exchange mechanism[J]. Acta Metal Mater, 1994, 42(9): 2943–2954.CrossRefGoogle Scholar
  7. [7]
    Khachaturyan A G. Theory of Structural Transformation in Solids[M]. New York: Wiley, 1983.Google Scholar
  8. [8]
    WANG Yong-xin, CHEN Zheng, LIU Bing, et al. Computer simulation on precipitation mechanism of phase in early stage in external energy field [J]. The Chinese Journal of Nonferrous Metals, 2004, 14(1): 255–262. (in Chinese)Google Scholar
  9. [9]
    ZHAO Yu-hong, CHEN Zheng, LI Xiao-ling. Computer simulation of strain-induced morphological transformation of coherent precipitates [J]. J Univ Sci Technol Beijing, 2003, 10(4): 55–60.Google Scholar
  10. [10]
    Zapolsky H, Pareige C, Marteau L, et al. Atom probe analyses and numerical calculation of ternary phase diagram in Ni-Al-V system [J]. Calphad, 2001, 25(1): 125–134.CrossRefGoogle Scholar
  11. [11]
    Pareige C, Blavette D. Simulation of the FCC→FCC+L12+D022 kinetic reaction [J]. Scripta Mater, 2001, 44: 243–247.CrossRefGoogle Scholar
  12. [12]
    Chen L Q, Khachaturyan A G. Computer simulation of structural transformations during precipitation of an ordered intermetallic phase [J]. Acta Metall Mater, 1991, 39(11): 2533–2551.CrossRefGoogle Scholar
  13. [13]
    Chen L Q. A computer simulation technique for spinodal decomposition and ordering in ternary systems [J]. Scripta Metall Mater, 1993, 29(5): 683–688.MathSciNetCrossRefGoogle Scholar
  14. [14]
    Lifshitz E M, Pitaevski L P. Statistical Physics[M]. Oxford: Pergamon Press, 1980.Google Scholar
  15. [15]
    Poduri R, Chen L Q. Computer simulation of atomic ordering and compositional clustering in the pseudobinary Ni3Al-Ni3V system[J]. Acta Mater, 1998, 46(5): 1719–1729.CrossRefGoogle Scholar
  16. [16]
    Poduri R, Chen L Q. Computer simulation of the kinetics of order-disorder and phase separation during precipitation of (Al3Li) in Al-Li alloys[J]. Acta Mater, 1997, 45(11): 245–255.CrossRefGoogle Scholar

Copyright information

© Central South University 2005

Authors and Affiliations

  • Li Yong-sheng 
    • 1
    Email author
  • Chen Zheng 
    • 1
    • 2
  • Lu Yan-li 
    • 1
  • Wang Yong-xin 
    • 1
  • Zhang Jian-jun 
    • 1
  1. 1.School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’anChina
  2. 2.State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi’anChina

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